U.S. patent application number 14/763515 was filed with the patent office on 2016-01-21 for safety device for preventing hand from being jammed in elevator door.
The applicant listed for this patent is Ho Yeon LEE. Invention is credited to Ho Yeon LEE.
Application Number | 20160016758 14/763515 |
Document ID | / |
Family ID | 49455464 |
Filed Date | 2016-01-21 |
United States Patent
Application |
20160016758 |
Kind Code |
A1 |
LEE; Ho Yeon |
January 21, 2016 |
SAFETY DEVICE FOR PREVENTING HAND FROM BEING JAMMED IN ELEVATOR
DOOR
Abstract
The present invention provides a safety device for preventing a
hand from being jammed in an elevator door including a conductive
member attached to the surface of the door and the door frame
whereby if the conductive member is contacted by the hand, it
senses the current of the human body so as to control the elevator
door, preventing the hand from being jammed in the door, and
directly illuminates the surface of the door so as to enable the
person to clearly see the hand contacting the door and to be
warned.
Inventors: |
LEE; Ho Yeon; (Seoul,
KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
LEE; Ho Yeon |
Seoul |
|
KR |
|
|
Family ID: |
49455464 |
Appl. No.: |
14/763515 |
Filed: |
February 14, 2014 |
PCT Filed: |
February 14, 2014 |
PCT NO: |
PCT/KR2014/001203 |
371 Date: |
July 26, 2015 |
Current U.S.
Class: |
187/317 |
Current CPC
Class: |
B66B 13/26 20130101 |
International
Class: |
B66B 13/26 20060101
B66B013/26 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 22, 2013 |
KR |
10-2013-0030977 |
Claims
1. A safety device for preventing a hand from being jammed in an
elevator door, the safety device comprising: a door LED board (110)
that is provided on a surface of an elevator door (10) opened or
closed by the driving of a door driving motor (40), which is
positioned between a car frame (20) and an entrance frame (30)
provided at an elevator car (1) and an elevator entrance (2) and is
controlled by control means (50), and that is provided on a surface
of a door LED board (110) configured such that a plurality of door
LEDs (112) which is turned on or off by the control means (50) is
provided on a surface of a door printed circuit board (PCB) (114);
a door conductive member (120) that is provided on a surface of the
door LED board (110) so as to turn on the door LEDs (112) by the
control means (50) when a current of a human body is detected, and
that is made of a transparent or translucent material; a frame LED
board (130) that is configured such that a plurality of frame LEDs
(132) is provided a frame printed circuit board (PCB) (134) on
surfaces of corners of the car frame (20) and the entrance frame
(30); and a frame conductive member (140) that is provided on a
surface of the frame LED board (130) to detect the current of the
human body.
2. The safety device of claim 1, wherein the door conductive member
(120) is an electrical conductivity sheet that is attached to
surfaces of the car door (12) and the entrance door (14), and is
obtained by mixing plastic resin with electrical conductive
material powder at a predetermined percentage by weight, and the
door printed circuit board (PCB) (114) is a flexible printed
circuit board.
3. The safety device of claim 1, wherein the door conductive member
(120) is a conductive plastic panel (124) obtained by mixing
plastic resin with electrical conductive material powder at a
predetermined percentage by weight and performing injection molding
on the mixed resultant so as to form a LED accommodation groove
(124a) in which the door LEDs (112) are settled.
4. The safety device of claim 1, wherein the door conductive member
(120) is obtained by forming a conductive layer (126) on a surface
of a non-conductive plastic panel (125) manufactured by performing
injection molding on a plastic resin so as to form a LED
accommodation groove (125a) in which the door LEDs (122) are
settled.
5. The safety device of claim 1, wherein the door conductive member
(120) is made of a metallic electrical conductive material, is
provided with light transmission holes (128, 148) punched in a
surface thereof, and allows light to transmit when the door LEDs
(112) of the door LED board (110) are turned on.
6. The safety device of claim 1, wherein the frame conductive
member (140) is a conductive plastic panel (144) obtained by mixing
plastic resin with electrical conductive material powder and
performing injection molding on the mixed resultant so as to form a
LED accommodation groove (144a) in which the frame LEDs (132) are
settled.
7. The safety device of claim 1, wherein the frame conductive
member (140) is obtained by forming a conductive layer (146) on a
surface of a non-conductive plastic panel (145) through injection
molding so as to form a LED accommodation groove (145a) in which
the frame LEDs (132) are settled.
8. The safety device of claim 1, wherein the frame LED board (130)
and the frame conductive member (140) are integrally fixed within a
cover (147), a fastening hole (147a) is formed in the cover (147),
and the frame LED board and the frame conductive member are
integrally fixed to the surfaces of corners of the car frame (20)
and the entrance frame (30) by using a screw (149).
9. The safety device of claim 1, wherein the frame LED board (130)
and the frame conductive member (140) are integrally fixed within a
cover (147), and are integrally fixed to the surfaces of corners of
the car frame (20) and the entrance frame (30) through an adhesive
or an adhesion tape.
10. The safety device of claim 1, wherein a settlement groove (21)
is formed in the car frame (20), and the frame LED board (130) and
the frame conductive member (140) are provided in the settlement
groove so as to be buried.
11. The safety device of claim 1, wherein the settlement groove
(13) is formed in a surface of the door (10), and the door LED
board (110) and the door conductive member (120) are provided in
the settlement groove so as to be buried.
12. The safety device of claim 1, wherein the door conductive
member (120) is made of a metallic electrical conductive material,
is provided with a light transmission hole (128) in a surface
thereof, and a light diffusion layer (150) made of a silicon or
rubber material to which a light diffusing material is added is
provided between the door conductive member (120) and the door LED
board (110).
13. The safety device of claim 1, wherein the frame conductive
member (140) is provided with a light transmission hole (148), and
a light diffusion layer (152) made of a silicon material to which a
light diffusing material is added is provided between the frame
conductive member (120) and the frame LED board (110).
14. The safety device of claim 1, wherein the door conductive
member 120 is provided with a LED settlement hole (110a) in which
the door LEDs (112) are settled.
15. The safety device of claim 1, wherein the frame conductive
member (140) is provided with a LED settlement hole (130a) in which
the frame LEDs (132) are settled.
16. The safety device of claim 1, further comprising: a
non-conductive member (160) that is provided with a LED settlement
hole (162) in which the door LEDs (112) are settled between the
door conductive member (120) and the door LED board (110).
17. The safety device of claim 1, further comprising: a
non-conductive member (170) that is provided with a LED settlement
hole (172) in which the frame LEDs (132) are settled between the
frame conductive member (140) and the frame LED board (130).
Description
TECHNICAL FIELD
[0001] The present invention relates to a safety device for
preventing a hand from being jammed in an elevator door, and more
particularly, to a device for preventing a hand from being jammed
in an elevator door that displays visual information on the
surfaces of an elevator door and a door frame so as to visually
alert the passenger to the possibility that the passenger's hand
will be jammed while controlling the opening or closing of an
entrance door or a car door so as not to damage the passenger's
hand even though the passenger's hand is jammed between the door
and the door frame during the opening of the entrance door or the
car door of the elevator.
BACKGROUND ART
[0002] In general, an elevator includes an elevator car that moves
a passenger while accommodating the passenger and moving up and
down along an elevator shaft which is vertically formed in a
building, a winding machine and a motor that generates a
predetermined power, and control means for moving the elevator car
to the corresponding floor by controlling the motor and the winding
machine in response to a button operation of the passenger.
[0003] A car door that is selectively opened or closed is provided
at the elevator car provided in the elevator, and an entrance door
that allows the passenger to step on or off at the corresponding
floor by being opened or closed in cooperation with the car door is
provided at an entrance of each floor of the building.
[0004] In this case, a gap exists between an entrance frame and an
entrance door so as to allow the entrance door to be smoothly
opened or closed. When the passenger waits at the entrance in order
to step on the elevator while the passenger puts their hand around
this gap, if the passenger does not recognize that the entrance
door is opened, and the passenger does not hand off from the
entrance door, there is a problem that the passenger' hand is
jammed in the gap between the entrance door and the entrance frame
and the hand is damaged. Particularly, since a child doesn't pay
enough attention, there is a concern about a negligent accident
that the child's hand is jammed between the entrance frame and the
entrance door and the hand is damaged.
[0005] In order to solve such problems, Korean Utility Model
Publication No. 20-2010-0010939 is suggested. This technology
relates to a device for preventing a hand from being jammed in an
elevator, and relates to a device for preventing the passenger's
hand or a foreign substance from being jammed in the elevator door
having a configuration in which a car door and an entrance door are
provided in a fixation section including an upper frame, a left
frame and a right frame. In this device, a pair of upper-frame left
sensors and a pair of upper-frame right sensors which are object
reflection sensors that vertically emit detection light toward the
lower side are respectively provided on inner wall surfaces at both
ends of the upper frame corresponding to outer surfaces of the
entrance door and the car door. A pair of upper-frame central
sensors which is object reflection sensors that vertically emit
detection light toward the lower side is provided on a central
inner wall surface of the upper frame corresponding to the outer
surfaces of the entrance door and the car door. In such a
configuration, when the elevator door is opened or closed, it is
possible to prevent the passenger's hand or various foreign
substances from being jammed.
[0006] However, since the Utility Model Publication detects the
hand or foreign substance by detecting the detection light, even
when a box or a bag that does not influence on the opening or
closing of the door approaches the door, the device arbitrarily
controls the opening or closing of the door by detecting the box or
bag. For this reason, the door is forcibly opened or closed often
in certain situations, the passenger feels uncomfortable. Since it
is necessary to provide a plurality of sensors at the upper frame,
there is a problem that the structure thereof is complicated.
[0007] Meanwhile, in order to solve the problems of the Utility
Model Publication, Japanese Patent Publication No. 2009-515798 is
suggested. This technology relates to a door assembly, and a sensor
formed using an electrical conductive film is provided on the
surface or edge surface of a door panel or a return panel, and a
sensor having the same structure is provided at a door frame
member.
[0008] Accordingly, when the hand touches the surface or edge
surface of the door panel or return panel and the current of the
human body is detected, the opening or closing of the door panel or
return panel is forcibly controlled, and it is possible to prevent
the hand from being damaged by being jammed between the elevator
door and the frame. However, in the Utility Model Publication, when
the human body is simply detected, it is possible to merely prevent
the hand from being damaged by opening or closing the door.
However, since a direct warning or visual information such as an
emergency state is not presented on the door, when the lighting
fixture of the elevator is turned off due to blackout, there is a
problem that the passenger cannot recognize their position and is
embarrassed.
[0009] Meanwhile, in a typical elevator, in order to prevent the
passenger from leaning against the door and to prevent an overload,
a notice sticker on which "Do Not Touch" or "Do Not Lean on. Beware
of Falling" is printed should be forcibly attached to a height of
170 to 180 cm from a lower end of the entrance door and the car
door under "Elevator Safety Act." However, since the manufactured
notice sticker needs to be attached to the car door and the
entrance doors of all floors, high cost is required to attach many
notice stickers. High cost, a lot of labor and a lot of time are
required for maintenance due to the loss and damage of the attached
notice stickers, and an external appearance of the elevator is
degraded.
[0010] In order to solve the problems of the safety device for
preventing a hand from being jammed in a door of the related art,
the present applicant has suggested Korean Patent Registration No.
10-1238068. This technology relates to a safety device for
preventing a hand from being jammed in an elevator door. This
safety device includes a door conductive waveguide sheet that is
provided on a surface of an elevator door, which is positioned
between a car frame and an entrance frame that are respectively
provided at an elevator car and an entrance and is opened or closed
by the driving of a door driving motor controlled by control means,
and that detects a current of a human body, and the control means
for determining whether or not a micro-current of the human body
when the current is detected through the door conductive waveguide
sheet, and a first LED that is provided on one side of a rim of the
door conductive waveguide sheet, is turned on by the control of the
control means, and irradiate the door conductive waveguide sheet
with light. In such a configuration, when the hand touches the
corners of the frame of the entrance or the elevator door and the
current of the human body is detected, it is possible to prevent
the hand from being jammed between the elevator door and the frame
by forcibly controlling the elevator door, and it is possible to
give a visual warning to the passenger by irradiating the
conductive waveguide sheet with the light.
[0011] In Korean Patent Registration No. 10-1238068 of the present
applicant, the conductive waveguide sheet is provided on the
surface of the door, and the light is applied to the surface of the
door. However, in the elevator, the width of the door is generally
wide so as to allow the passenger to pass with no interference, and
thus, the light of the LED provided on one side of the side surface
of the door does not sufficiently reach up to the opposite side.
For this reason, since a small amount of light is applied to the
surface of the door, illuminance is low, and thus, there is a
problem that visibility is low.
DISCLOSURE
Technical Problem
[0012] In order to solve the above problems, an object of the
present invention is to provide a safety device for preventing a
hand from being jammed in an elevator door capable of preventing a
hand of a passenger who uses an elevator from being jammed between
a door and a door frame by being turn on at the rear of the
conductive member attached to the surfaces of the door and the door
frame to detect a human body and directly irradiating a conductive
member with light to increase visibility.
Technical Solution
[0013] In order to achieve the above object, the present invention
provides a safety device for preventing a hand from being jammed in
an elevator door.
[0014] The safety device includes a door LED board that is provided
on a surface of an elevator door opened or closed by the driving of
a door driving motor, which is positioned between a car frame and
an entrance frame provided at an elevator car and an elevator
entrance and is controlled by control means, and that is provided
on a surface of a door LED board configured such that a plurality
of door LEDs which is turned on or off by the control means is
provided on a surface of a door printed circuit board (PCB), and a
door conductive member that is provided on a surface of the door
LED board so as to turn on the door LEDs by the control means when
a current of a human body is detected, and that is made of a
transparent or translucent material.
[0015] In this case, the door conductive member may be an
electrical conductivity sheet that is attached to surfaces of the
car door and the entrance door, and may be obtained by mixing
plastic resin with electrical conductive material powder at a
predetermined percentage by weight, and the door printed circuit
board (PCB) may be a flexible printed circuit board.
[0016] The door conductive member may be a conductive plastic panel
obtained by mixing plastic resin with electrical conductive
material powder at a predetermined percentage by weight and
performing injection molding on the mixed resultant so as to form a
LED accommodation groove in which the door LEDs are settled
[0017] The door conductive member may be obtained by forming a
conductive layer on a surface of a non-conductive plastic panel
manufactured by performing injection molding on a plastic resin so
as to form a LED accommodation groove in which the door LEDs are
settled.
[0018] The door conductive member may be made of a metallic
electrical conductive material, may be provided with light
transmission holes punched in a surface thereof, and may allow
light to transmit when the door LEDs of the door LED board are
turned on.
[0019] The safety device may further include a frame LED board that
is configured such that a plurality of frame LEDs is provided a
frame printed circuit board (PCB) on surfaces of corners of the car
frame and the entrance frame, and a frame conductive member that is
provided on a surface of the frame LED board to detect the current
of the human body.
[0020] The frame conductive member may be a conductive plastic
panel obtained by mixing plastic resin with electrical conductive
material powder and performing injection molding on the mixed
resultant so as to form a LED accommodation groove in which the
frame LEDs are settled.
[0021] The frame conductive member may be obtained by forming a
conductive layer on a surface of a non-conductive plastic panel
through injection molding so as to form a LED accommodation groove
in which the frame LEDs are settled.
[0022] The frame LED board and the frame conductive member are
integrally fixed within a cover, a fastening hole may be formed in
the cover, and the frame LED board and the frame conductive member
may be integrally fixed to the surfaces of corners of the car frame
and the entrance frame by using a screw or may be integrally fixed
to the surfaces thereof by using an adhesive or an adhesion
tape.
[0023] Settlement grooves may be formed in the door, the car frame
and entrance frame, and a set of the frame LED board and the frame
conductive member, and a set of the door LED board and the door
conductive member may be respectively provided in the settlement
grooves so as to be buried.
[0024] The door conductive member may be made of a metallic
electrical conductive material, may be provided with a light
transmission hole in a surface thereof, and a light diffusion layer
made of a silicon or rubber material to which a light diffusing
material is added may be provided between the door conductive
member and the door LED board. The frame conductive member may be
provided with a light transmission hole, and a light diffusion
layer made of a silicon material to which a light diffusing
material is added may be provided between the frame conductive
member and the frame LED board.
[0025] The door conductive member may be provided with a LED
settlement hole in which the door LEDs are settled, and the frame
conductive member may be provided with a LED settlement hole in
which the frame LEDs are settled.
[0026] The safety device may further include a non-conductive
member that is provided with a LED settlement hole in which the
door LEDs are settled between the door conductive member and the
door LED board, and may further include a non-conductive member
that is provided with a LED settlement hole in which the frame LEDs
are settled between the frame conductive member and the frame LED
board.
Effect of the Invention
[0027] According to the present invention, when the conductive
members are attached to the surfaces of the elevator door and the
door frame and the current of the human body is detected due to the
touch of the hand, it is possible to prevent the hand from being
damaged by being jammed between the elevator door and the frame by
forcibly controlling the elevator door. Further, since illuminance
is increased by directly irradiating the surface of the door with
light and the fact that the passenger's hand touches the surface of
the door is visually displayed with vividness, it is possible to
more surely alert the passenger to the possibility of the hand
jamming.
DESCRIPTION OF DRAWINGS
[0028] FIG. 1 is a perspective view of an entrance for describing a
safety device for preventing a hand from being jammed in an
elevator door according to the present invention.
[0029] FIG. 2 is an internal perspective view of an elevator car
for describing the safety device for preventing a hand from being
jammed in an elevator door according to the present invention.
[0030] FIG. 3 is a sectional view of an elevator for describing the
safety device for preventing a hand from being jammed in an
elevator door according to the present invention.
[0031] FIG. 4 is a control block diagram for preventing a hand from
being jammed in an elevator door according to the present
invention.
[0032] FIG. 5 is a sectional view showing the safety device for
preventing a hand from being jammed in an elevator door according
to the present invention.
[0033] FIG. 6 is a diagram showing a safety device for preventing a
hand from being jammed in an elevator door according to another
embodiment of the present invention.
[0034] FIG. 7 is a sectional view showing a safety device for
preventing a hand from being jammed in an elevator door according
to still another embodiment of the present invention.
[0035] FIG. 8 is a sectional view showing a safety device for
preventing a hand from being jammed in an elevator door according
to still another embodiment of the present invention.
[0036] FIG. 9 is a diagram for describing a safety device for
preventing a hand from being jammed in an elevator door according
to still another embodiment of the present invention.
[0037] FIG. 10 is a sectional view showing a safety device for
preventing a hand from being jammed in an elevator door according
to still another embodiment of the present invention.
[0038] FIG. 11 is a sectional view showing a safety device for
preventing a hand from being jammed in an elevator door according
to still another embodiment of the present invention.
BEST MODE
[0039] Hereinafter, a safety device for preventing a hand from
being jammed in an elevator door according to the present invention
will be described in detail with reference to the accompanying
drawings.
[0040] FIGS. 1 to 5 are diagrams for describing the safety device
for preventing a hand from being jammed in an elevator door
according to an embodiment of the present invention.
[0041] According to the present embodiment, an elevator that allows
a passenger to easily move up and down is provided in a building,
and an elevator door 10 that allows the passenger to step on or off
is provided in an elevator car 1 and the elevator entrance of each
floor in the building.
[0042] The elevator door 10 includes a car door 12 that is provided
in the elevator car 1, and an entrance door 14 that is provided in
the entrance of the elevator entrance 2 of each floor so as to be
opened or closed in cooperation with the car door 12.
[0043] In this case, the car door 12 and the entrance door 14 are
respectively positioned between a car frame 20 and an elevator
entrance frame 30 which are door frames provided within the
elevator entrance 2 and the elevator car 1, and are opened or
closed depending on the driving of a door driving motor 40.
[0044] Of course, the door driving motor 40 is controlled under the
control of control means 50 so as to open or close the doors.
[0045] The safety device for preventing a hand from being jammed in
an elevator door according to the present invention is provided in
such an elevator.
[0046] The safety device for preventing a hand from being jammed
according to the present invention is provided on the surface of
the elevator door 10. The safety device includes a door LED board
110 in which a plurality of door LEDs 112 is provided on the
surface of a door printed circuit board (PCB) 114, and a door
conductive member 120 that is provided on the surface of the door
LED board 110 and detects the current of a human body. In this
safety device, when a detection signal is input by detecting the
current of the human body through the door conductive member 120,
the control means 50 controls the door LEDs 112 to be turned on
such that the door conductive member 120 is irradiated with
light.
[0047] In this case, the door LED board 110 and the door conductive
member 120 may be sequentially attached onto the surface of the
elevator door 10, or the door LED board 110 and the door conductive
member 120 may be attached to the surface of the elevator door 10
while being integrally coupled to each other.
[0048] The door LED board 110 is configured such that the plurality
of door LEDs 112 is provided on the surface of the door printed
circuit board (PCB) 114, and irradiates the door conductive member
120 with light when the door LEDs 112 are turned on. It is
preferable that the door printed circuit board 114 is a flexible
printed circuit board (FPCB) and is attached to the surface of the
door 10 by using an adhesive.
[0049] The door conductive member 120 is attached to the surface of
the car door 12 and the entrance door 14, is formed using a
transparent or translucent film made of a plastic (synthetic resin)
material such as PP, PC, PE, PET, PI, PU, ABS, or PVC, and is an
electrical conductive sheet obtained by mixing plastic resin with
carbon or metallic powder which is an electrical conductive
material at a predetermined percentage by weight.
[0050] Of course, the door conductive member 120 may be formed by
coating the surface of the door LED board 110 with a conductive
paint.
[0051] Particularly, various designs 121 such as numbers, letters,
figures, symbols, and patterns may be formed on the surface of the
door conductive member 120. For example, since a warning sticker to
be necessarily attached to the door 10 can be replaced with the
door conductive member 110, it is possible to prevent degradation
in the external appearance of the elevator, and it is possible to
provide visual information such as various designs capable of
exhibiting an interior effect of the inside of the elevator car to
passengers who use the elevator.
[0052] Meanwhile, when the door LEDs 112 of the door LED board 110
are turned on, even though a lighting fixture in the elevator car
is turned off due to a blackout, the passenger can easily recognize
the position of the door 10. In a normal state, the door LEDs 112
are turned on when the human body is detected using commercial
power supply 60. In an emergency state where the supply of power is
stopped, the door LEDs are turned on by receiving a power of a
battery 62 charged by the commercial power supply 60.
[0053] In this case, a notice 123 indicating "Do Not Touch" or "Do
Not Lean on. Beware of Falling" is printed on the door conductive
member 120 in various colors, and is expressed in color similar to
an actual notice sticker.
[0054] In this case, a current detecting unit (not shown) for
detecting whether or not the power is supplied from the commercial
power supply 60 is provided. The control means 50 monitors whether
or not the power is consecutively supplied from the commercial
power supply 60, and controls the door LEDs 112 to be turned on
when the supply of the power from the commercial power supply 60 is
blocked.
[0055] The door conductive member 120 is preferably attached at a
height of 50 cm or more from the lower parts of the entrance door
14 and the car door 12 as the elevator door 10.
[0056] Meanwhile, a frame LED board 130 in which a plurality of
frame LEDs 132 is provided at a frame printed circuit board (PCB)
134, and a frame conductive member 140 that is provided on the
surface of the frame LED board 130 to detect the current of the
human body are further provided on the surfaces of the corners of
the car frame 20 and the entrance frame 30.
[0057] In this case, the frame LED board 130 has the same structure
as that of the door LED board 110, and the frame conductive member
140 has the same structure as that of the door conductive member
120.
[0058] The door LED board 110 and the Door conductive member 120,
and the frame LED board 130 and the frame conducive member 140 can
be attached to the corners of the frames 20 and 30 or the door 10,
and thus, it is possible to conveniently attach the safety device
to the existing elevator without newly replacing the elevator with
new one.
[0059] When the current is detected in the door conductive member
110 and the frame conductive member 130, the control means 50
determines whether or not the detected current is the micro-current
of the human body. The control means controls the door driving
motor 40, and turns on the door and frame LEDs 112 and 132 so as to
allow the passenger who uses the elevator to recognize the visual
information. In so doing, light transmits through the surfaces of
the door conductive member 110 and the frame conductive member 130,
and thus, predetermined visual information is displayed on the door
10, the car frame 20 and the entrance frame 30.
[0060] That is, when the current is detected in the door conductive
member 110 or the frame conductive member 130 while the door
driving motor 40 is driven and the door 10 is opened, the control
means 50 stops the driving of the door driving motor 40 for a
predetermined period of time (for example, 1 or 2 seconds), and
controls the driving of the door driving motor 40 so as to open the
elevator door 10. When the current is detected while the elevator
door 10 is closed, the control means drives the door driving motor
40 to open the elevator door 10, maintains the opened state for a
predetermined period of time (for example, 1 or 2 seconds), and
controls the driving of the door driving motor 40 so as to normally
close the door again. When the human body is detected, the control
means turns on the door and frame LEDs 112 and 132 to give a visual
warning to the passenger.
[0061] Meanwhile, a display panel 150 such as a LCD is provided on
the surface of the elevator door 10 so as to be buried.
Particularly, the display panel 150 is provided to display daily
living information such as advertisements, promotional videos,
news, and weather useful for the passenger who uses the elevator,
and is provided at the car door 12. The display panel 150 is
provided such that a fixation groove 11 is formed in the surface of
the elevator door 10, the display panel 150 is buried in the
groove, and the display panel is integrally fixed using a fixation
bracket 152.
[0062] A speaker 70 is provided on one side of the car frame 20 and
the entrance frame 30, and when the current is detected in the door
conductive member 110 and the frame conductive member 130, the
control means 50 preferably controls the speaker 70 to output
warning sound. In this case, the control means 50 may further
include a memory unit (not shown) that stores a warning guide
comment, and the warming guide comment, for example, "Do Not Touch
Door" may output as voice.
[0063] FIG. 6 is a diagram showing another embodiment of the
present invention. A settlement groove 13 is formed in the surface
of the door 10, and the door LED board 110 and the door conductive
member 120 are settled in the settlement groove. The surface of the
door conductive member 120 and the surface of the door 10 have the
same height, and thus, when the door 10 is opened or closed, it is
possible to prevent the interference between the car frame 20 and
the entrance frame 30.
[0064] A settlement groove 21 is formed in the car frame 20, and
the frame LED board 130 and the frame conductive member 140 are
provided in the settlement groove so as to be buried. Of course, a
settlement groove (not shown) is formed in the entrance frame 30,
and the frame LED board 130 and the frame conductive member 140 are
provided in the settlement groove so as to be buried.
[0065] Meanwhile, FIG. 7 is a diagram showing still another
embodiment of the present invention. The door conductive member
120, which is provided on the surface of the door LED board 110 in
which the plurality of door LEDs 112 is provided in the door
printed circuit board (PCB) 114 and detects the current of the
human body, is a conductive plastic panel 124 obtained by mixing a
plastic (synthetic resin) material with carbon or metallic powder
which is an electrical conductive material at a predetermined
percentage by weight and performing injection molding on the
resultant so as to form a LED accommodation groove 124a in which
the door LEDs 112 are settled. In this case, the conductive plastic
panel 124 is manufactured by mixing a transparent or translucent
acrylic resin with carbon or metallic powder which is an electrical
conductive material.
[0066] The conductive plastic panel 124 is integrally coupled to
the door printed circuit board 110 by using an adhesive. In this
case, as the door printed circuit board (PCB) 114, a typical PCB is
preferably used without using a flexible printed circuit board.
[0067] Of course, the frame conductive member 140, which is
provided on the surface of the frame LED board 130 in which the
plurality of frame LEDs 132 is provided at the frame printed
circuit board (PCB) 134 and detects the current of the human body,
is also a conductive plastic panel 144 obtained by mixing a plastic
(synthetic resin) material with carbon or metallic powder which is
an electrical conductive material at a predetermined percentage by
weight and performing injection molding on the resultant so as to
form a LED accommodation groove 144a in which the frame LEDs 132
are settled.
[0068] FIG. 8 is a diagram showing still another embodiment of the
present invention. The door conductive member 120 is provided by
forming a conductive layer 126 on the surface of a non-conductive
plastic panel 125 manufactured by performing injection molding on
plastic resin such that a LED accommodation groove 125a in which
the door LEDs 122 are settled is formed.
[0069] In this case, the conductive layer 126 is formed using a
transparent or translucent film made of a plastic (synthetic resin)
material such as PP, PC, PE, PET, PI, PU, ABS, or PVC, is an
electrical conductive film obtained by mixing plastic resin with
carbon or metallic powder which is an electrical conductive
material at a predetermined percentage by weight, and is integrally
attached to the surface of the non-conductive plastic panel
125.
[0070] The frame conductive member 140 that is provided on the
surface of the frame LED board 130 to detect the current of the
human body is also provided by forming a conductive layer 146 on
the surface of a non-conductive plastic panel 145 manufactured
through injection molding such that a LED accommodation groove 145a
in which the frame LED 132 is settled is formed.
[0071] Of course, the conductive layers 126 and 146 are preferably
formed on the surfaces of the non-conductive plastic panels 125 and
145 through electroplating, chemical plating, or coating or
depositing of conductive ink.
[0072] FIG. 9 is a diagram showing still another embodiment of the
present invention. The door conductive member 120 may be
manufactured in a rectangle shape, and may be arranged in a check
pattern. In this case, a wire is preferably formed between the
neighboring door conductive members 120 and 120' so as to allow
current to flow therebetween.
[0073] Of course, although not shown, the door conductive member
120 may be manufactured in various shapes such as a circle, a
triangle, a diamond, and a hexagon in addition to the rectangle,
and may be attached to the door or the frame. As stated above, it
is possible to expect a design effect of the safety device by
forming the shape of the door conductive member 120 in various
shapes.
[0074] The frame LED board 130 and the frame conductive member 140
are integrally fixed within a cover 147 made of a metallic or
plastic material, and a fastening hole 147a is formed in the cover
147. The frame LED board and the frame conductive member are
integrally fixed to the corner surfaces in positions of the car
frame 20 and the entrance frame 30 adjacent to the door by using a
screw 149. In this case, the cover 147 is fixed using the screw 149
while coming in close contact with the surfaces of the car frame 20
and the entrance frame 30. Of course, the cover 147 may be fixed
through an adhesive or an adhesion tape.
[0075] FIG. 10 is a diagram showing still another embodiment of the
present invention. The door conductive member 120 and the frame
conductive member 140 are made of an electrical conductive material
such as a nonferrous metallic material or a metallic material such
as copper, aluminum or carbon which has excellent electrical
conductivity. Light transmission holes 128 and 148 having various
shapes and sizes are formed in the surfaces thereof through
punching. When the door LEDs 112 and the frame LEDs 132 of the door
LED board 110 and the frame LED board 130 are turned on, light
transmits through the transmission holes 128 and 148. In this case,
the light transmission holes 128 and 148 may be punched in various
shapes and sizes such as numbers, letters, figures, symbols, and
patterns.
[0076] Meanwhile, FIGS. 11A to 11C are diagrams showing still
another embodiment of the present invention. Referring to FIG. 11A,
a light diffusion layer 150 made of a silicon or rubber material to
which a light diffusing material is added is provided between the
door LED board 110 and the door conductive member 120 in which the
light transmission hole 128 is formed, and a light diffusion layer
152 mad of a silicon or rubber material to which a light diffusing
material is added is provided between the frame LED board 130 and
the frame conductive member 140 in which the light transmission
hole 148 is formed.
[0077] By the use of the light transmission layers 150 and 152,
when the door LEDs 112 and the frame LEDs 132 are turned on, the
light diffuses while passing through the light diffusion layers 150
and 152, and transmits through the light transmission holes 128 and
148. As a result, it is possible to create a luxurious
atmosphere.
[0078] Referring to FIG. 11B, the door conductive member 120 and
the frame conductive member 140 that are provided with the LED
settlement holes 110a and 130a in which the door LEDs 112 and the
frame LEDs 132 are settled come in close contact with the surfaces
of the door LED board 110 and the frame LED board 130. Referring to
FIG. 11C, non-conductive members 160 and 170 that are provided with
the LED settlement holes 162 and 172 in which the door LEDs 112 and
the frame LEDs 132 are settled come in close contact with the
surfaces of the door LED board 110 and the frame LED board 130.
That is, the non-conductive member 160 is further provided between
the door conductive member 120 and the door LED board 110, and the
non-conductive member 170 is further provided between the frame
conductive member 140 and the frame LED board 130.
[0079] In this case, the non-conductive members 160 and 170 may be
made of various materials such as a wood material, a glass
material, and a marble material, and thus, it is possible to create
various atmospheres.
[0080] Although the embodiments of the present invention have been
described in detail, the scope of the present invention is not
limited thereto. Equivalents to the embodiments of the present
invention would fall within the scope of the present invention.
INDUSTRIAL APPLICABILITY
[0081] The present invention provides a device for preventing a
hand from being jammed in an elevator door that displays visual
information on the surfaces of an elevator door and a door frame so
as to visually alert the passenger to the possibility that the
passenger's hand will be jammed while controlling the opening or
closing of an entrance door or a car door so as not to damage the
passenger's hand even though the passenger's hand is jammed between
the door and the door frame during the opening of the entrance door
or the car door of the elevator.
* * * * *